Automatically-acting device for coating the yarn elements from which a laminated cohesive interwound fabric band is constructed.



l. A. SUBERS.

VICE FOR COATING THE YARN ELEMENTS FROM WHICH A LAMINATED TE TNTERWOUND FABRIC BAND IS CONSTRUCTED.

AUTOMATICALLY ACTING i3 3 SHEETSSHEET I.

Patented Apr. 24, 1917.

APPLICAT ON FILED AUG. 17. 1914.

g LM KA A L. A. SUBERS.

AUTOMATICALLY ACTING DEVICE FOR COATING THE YARN ELEMENTS FROM WHICH A LAMINATED COHESIVE INTERWOUND FABRIC BAND IS CONSTRUCTED.

APPLICATION FILED AUG. IT. I9I4.

1,223,636, Patented Apr.94,1917.

3 SHEETS-SHEET 2 I III llllll A... II I I III: iIIl u-m I =I II I i: I I g: A "I L. A. SUBERS.

AUTOMATICALLY ACTING DEVICE FOR COATING THE YARN ELEMENTS FROM WHICH A LAMINATED COHESIVE INTERWOUND FABRIC BAND IS CONSTRUCTED.

APPLICATION FILED AUG. II. 1914.

1,223,636, Patented Apr. 94, 1917.

3 SHEETS-SHEET 3.

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LAWRENCE A. SUBERS, OF EAST CLEVELAND, OHIO.

AUTOMATICALLY-ACTING DEVICE FOR COATING THE YARN ELEMENTS FROM WHICH A LAMINATED COHESIVE INTERWOUND FABRIC BAND IS GONSTRUCTED.

Specification of Letters Patent.

Patented Apr. 24, 191?.

Original application filed February 19, 1912, Serial No. 678,696. Continuation of renewed application filed February 5, 1913, Serial No. 746,420. This application filed August 17, 1914. Serial No. 857,074.

' tion, such as will enable others skilled in the art to which it appertains to make and use the same.

This device is an improvement upon the coating mechanism shown and described in my former application Ser. No. 668,625, filed December 30, 1911, for coating the parallel-yarn elements from which a laminated-cohesive-interwound fabric band is constructed.

In the previous application a device for constructing a fabric band was shown provided with a tapered mandrel of two diameters, uponthe larger portion of which yarn elements were interwound and laminated and crossed each other at a predetermined angle, and the yarn elements were passed through a bath of coating material and ex posed to vacuum and heat prior to winding them upon the larger portion of the mandrel and were afterward pulled off from the smaller extremity thereof at a reduced relative'angle to each other.

In the former device an arrangement of grooved, concentric coating cylinders were employed wherein each of the yarn elements composing the band was separately and completely coated-and frictioned before being .interwound and laminated upon the mandrel.

In this improved device the yarn elements. are first properly mterwound and laminated upon the larger portion of themandrel under a predetermined tension and as the band is drawn along the mandrel it passes into a reservoir containing liquid rubber cement or other adhesive material, and is expanded therein, thereby diametrically separating each yarn element circumferentially from the other, and completely coating and saturating them; After emerging therefrom the band passes over the reduced extremity of the mandrel, contracting in diameter, by reason of the tension, till the yarn elements are in their smallest angular position in the fabric, and so when the band passes oil the tapered extremity of the mandrel all the yarn elements in the band will be closely drawn together and will be uniformly coated throughout. Winding the yarn elements upon the portion of the mandrel of greater diameter at a larger angle than desired in the finished band and then decreasing the angle by drawing the band under tension from the smaller extremity of the mandrel, greatly facilitates the construction of a band from yarn elements extending longitudinally at a smaller angle than they can readily be wound.

Another means of expanding the series of yarn elements for coating purposes consists of winding the four constituent series of yarn elements respectively about a forming tube and three non-rotating, encompassing, concentric cylinders attached to the frame work of the machine. The four series of a predetermined number-of yarnelements are conducted to the mandrel and cylinders in the same manner as in the other. method but are drawn overthe mandrel and cylinders out of contact with each other to a predetermined point when they pass from the cylinders to the forming tube, forming a perfect interwound laminated band. The

liquid rubber cement or other adhesive material is applied by an encompassing rubber cup just before the contact of the various series of yarn elements with the forming tube and they then pass to the vacuum and heat'.chamber, or, after a predetermined amount of the various series of yarn elements have been interwound and laminated" show conclusively that in constructing fabric bands of this character in which the angle of interwinding may vary from approximately 4 to 45, the employment of both these methods in the same machine are fabric band of a 45 angle, since the re-.

sistance to pulling the band along the mandrel when interwound at this latter angle-is much less when the series of yarn elements are divided among the mandrel and the three encompassing cylinders. The mechanism by means of which these results are obtained is hereinafter described, illustrated in the accompanying drawings and specifically pointed out in the claims. In the accompanying drawings Figure 1' is a longitudinal section of the receptacle for coating and saturating the yarn elements and of the vacuum chamber in which the coating on the fabric band is solidified. by the evaporation of the solvents therein. In this view the expanding device within the rubber receptacle is shown, and the sliding gates by means of which the escape of rubber through the opening through which the fabric passes can be prevented, when the machine stops. Fig. 2 is an enlarged elevation of a portion of the mandrel showing the cylindrical portion of larger diameter on which the yarn elements are first wound, the expanding device, and the outer portion of the mandrel of smaller diameter, from which the laminated fabric is removed; Fig. 3 is a transverse'section of the mandrel on line L-l Fig. 1, showing the expanding device; Fig. 4 is a longitudinal central section of the mandrel and expander; Fig. 5 is a front elevation of the receptacle for rubber, reduced in size, show- .ing the overlapping flexible retaining plates for the rubber; Fig. '6 is a transverse section through the rear wall of the receptacle on line g-g Fig. 1, showing the sliding gates and guide slots and pins therefor;

Fig. 7 is a transverse section of the front wall of the receptacle on line ff Fig. 5, showing the overlapping retaining devices for the rubber; Fig. 8 is a perspective view of one of the slidingjgates; Fig. 9 is a detail of one of .the guiding rods for the yarn elements showing guiding and tension applying devices; Fig. 10 1s a planview of the vacuum drying chamber, and includes plan views of the rubber tank, vacuum pump and air compressor, by means of which-the coating material; preferably rubber, is put under pressure inthe rubber tank, and is forcedinto the reservoir in .the band forming machine; Fig. 11 is a vertical section of the rubbertank; Fig. 12 is a vertical longitudinal section of the reels showing the expanding cylinders for the bands and su ports therefor; Fig. 13 is a front view 0 four of these brhckets'; Fig. 14 is a longitudinal section of portions of these guide cylinders.

V Z slide radially in the inner end wall' Z of In these views B is a cylindrical mandrel upon which the bands of yarn elements are laminated to form the fabric band. This mandrel is provided with a tapered portion B and a smaller cylindrical portionX ter-- minating in a flattened extremity X which is adaptedto flatten the fabric band prior to entering the vacuum chamber G 2 is a chamber for fluid rubber, divided in halves secured together for access to the interior for cleaning, and is provided with The opening Z in the outer end is closed by means of overlapping washers .Z of leather or other flexible material held in place by a metal washer Z which is divided in half to correspond with the divisions of the chamber and 1s secured theretoby means of screws Z and the opening Z in the inner end is closed by the walls Z of the chamber which contains sliding gates Z,

'Z which can be opened or closed by rotat ing the plate Z This plate is provided with the bevel gear 'Z engaging'the gear Z upon a shaft Z so as to automatically close the opening Z iin. the wall of the chamberZ when the machine stops and pie vent the escape of rubber. or other adhesive substance therefrom.

The gates Z are operated by p'inslZ fixed thereon, and by meansof camshaped openings Z. in the rotatable plate or disk By this means thegates are made to the chamber Z in grooves Z Z The forming tube or mandrel B is pro vided with an annular recess L registering with the gates Z so that when a 'knot or other. obstruction passes the edges of the opening Z in the wall Z of the'chamber 'Z, the band is depressed into the annular recess L.-

guide rollers by means of which the several yarn elements F, F, are applied to the mandrel, and the rods and-guide rollers rotate about the mandrel so asto wind the yarn elements F thereabout at the required angles. The yarnelementsare placed under tension by. means of 'uide" and tension rollers C, C and R mounted upon the stands R R which are in turn se cured upon the reels B, B, B and B one of. which B is indicated in Fig. 9. Substantially in the center of the rubber re-. ceptacle is shown the expanding device preferably comprising a ring Z having an annular edge Z of. greater diameter than 110. 'C*,,C are gulde rods and C C are them 'in order that the coating material will flow between them, and coat and saturate every portion thereof.

At a predetermined distance from the expanding ring Z in the chamber Z are angular surfaces terminating in apices Z Z concentric with the mandrel, whose functions are to confine the yarn elements as they approach and recede from the expanding ring and also to partially control the tension of these yarn elements in passing over this ring.

The expanding ring Z also serves to provide a space between the mandrel and the yarn elements so that therubber coating material will also have access to the inner surface of. these yarn elements. The exterior surfaces are also coated as the yarn elements pass through the receptacle, and

the thickness of the outer coating is determined by the diameter of the opening Z in the inner wall. The fabric band is pulled from the mandrel bymeans of rollers H grooved at H to permit the evaporation of the solvents from all portions of the band and the solidification of the coating thereon. One of these rollers is seen in Fig. 1 in the vacuum chamber G.

The mandrel is provided with longitudinal grooves D", D which pass underneath the expanding ring Z so as to'give free circulation to the coating material and access therefor to the inner sides of the yarn elements. 1 H

The mandrel shown in Fig. 4 is hollow and is provided with radial openings D, D which communicate with the grooves D and if desired the rubber coating can be fed through these openings to the yarn elements and rubber receptacle.

A valve D having radial openings D can be employed to control the passage of the rubber or other adhesive material through the openings D, D. An eccentric opemng D extends through the outer flattened extremity of the mandrel and is controlled by means of the valve D having an eccentric opening D", so that rubbercan be introduced into the interior of the fabric if desired. Ordinarily however rubber can be fed to the receptacle Z through a pipe? E Pressure is applied to the rubber in the tankE so'that the rubber will be sup-' .plied to and completely fill the receptacle Z and thus no portion of the fabric can escape treatment.

In Figs. 10 and 11 are shown the vacuum chamber G, the suction or vacuum pump H and connecting pipe H. The rubber tank IQ is provided with the, piston E gage E a1r'pressure pump E and connecting pipe .I' and E. In Fig. 9 is shown a portion of one of the rotating reels B which wind the yarn elements about the' mandrel, a split standard It. attached thereto, spring -guidi1ig rolls C and C for the yarn elements F. The spring pressed rolls C and R provide a predetermined tension for these yarn elements by means of the spring A complete description of the mechanism f0r interwinding and laminating these yarn elements about the mandrel is described in my former application Ser. No. 668,625, filed December 30, 1911. In operation the yarn elements F, F are interwound under tension upon the larger portion of the mandrel B at an angle wider than that intended to be permanent and hence open spaces are left between the crossing points. They then pass through the protected front wall of the receptacle Z containing liquid rubber cement or other adhesive material and thence pass over the expanding ring whose greater diameter not only separates circumferentially the yarn elements as units but also the yarns composing these elements and the several yarn elements are thus completely coated and saturated with the desired coating material.

On emerging from the receptacle Z the band is exposed to the heat and vacuum of the chamber G and passes over the tapered portion of the mandrel to that of less diameter where the bands assume under the tension a smaller relative angle and are brought closely together and the tubular fabric is flattened by the laterally expanded terminal of the mandrel, as it passes to the drying and pulling rolls H V The yarn elements in passing over the expanding ring Z are widely separated and in passing to the smallerpart of the mandrel the elements readily slide over Y each other before the coating is solidified, the angle of winding constantly diminishing, and thus all of the' points of crossing of the yarn elements in the finished band are completely coated. I n

In Figs. 12, 13, and 14 are illustrated a series of non-rotating expanding means, located exterior to the coating chamber, which serve to separate the yarn elements entirely out of contact with each other so that they of the mandrel B and are supported upon 136 threads of a predetermined number andarms 4, 4, 4 secured to the several reel sup porting brackets B. y v

The yarn elements from reel B pass over the inside cylinder 1, Whose extremity is set slightly in the rear of the shoulder 5 on the mandrel; the yarn elements from reel B pass over the intermediate cylinder 2 Whose extremity is set slightly back from that of cylinder 1, and the yarn elements from reel 13 pass over the outside cylinder 3 whose extremity is set slightly back from that of cylinder 2, thus giving to all the yarn elements a corresponding angle of inclination to the mandrel, serving to concentrate them on a small portion of the mandrel and also serving to elevate them above the smaller portion X of the mandrel, so that the coating material will have equal access to all.

In Fig. 12 the receptacle G is attached to the vacuumchamber G, having a nozzle Gr through which the mandrel and yarn elements thereon have access to the chamber.

The mandrel and yarn elements F enter the receptacle G through the aperture G Which closely surrounds the elements which by their forward movement along the mandrel tend to prevent the rather viscous rubber cement or other adhesive material from escaping. The rubber cement is supplied through the pipe E The location of the expanding means may be also at any desired point on the mandrel.

It is obvious that the constituent elements of this fabric band may be of any desired form of material other than that herein specifically described, Without departing from the spirit of the invention or the scope of the claims.

It is also obvious that by the use of any suitable adhesive substance for the purpose of coating the elements composing the fabric band that the same may be applied at any predetermined high temperature and the band then be exposed to a predetermined low temperature for solidifying the same without departing from the spirit of the invention or the scope of the claims.

It is evident that any predetermined number of expanding rings or cylinders and ac companying confining means may be used and located at desired points on the forming tube or mandrel for the purpose indicated, Without departing from the spirit of the invention or the scope of the claims.

Byjthe term yarn element? as used in these specifications and claims is meant a group of close lying parallel yarns or diameter forming a fiat band.

Having described the invention, What I claim as new and desire to secure by Letters Patent is: i

1. In a device for forming a laminatedcohesive-interwound tubular fabric from yarn elements, and for coating the same, a

mandrel upon whicn D116 yarn elements are .sion device for each yarn element. a 2. In a device for the purpose described,

a mandrel upon Which bands of flexible material are interwound, a chamber for coating material through which said mandrel passes, and expanding means concentric With said mandrel over which said bands pass to expose the same separately to the said coating material in said chamber.

' 3. In a device for constructing a laminated-cohesive-interwound tubular fabric, and for coating the yarn elements composing the same, a mandrel, a chamber for coating material through which the mandrel passes, stationary annular expanding means concentric with the mandrel over which said yarn elements are drawn, and means for placing said yarn elements under tension.

4. In a device for constructing a laminated-cohesive-interwound fabric, said fabric composed of yarn elements, a mandrel, means for rotating the yarn elements about said mandrel, means for pulling the yarn elements over the mandrel and for supplying tension thereto, a chamber for coating material through which the mandrel and fabric extend, and means for temporarily separating the yarn elements and constituent yarns while passing through said chamber to expose the yarn elements and constituent yarns separately the coating material therein.

to contact with i 5. In combination, a mandrel upon which;-

a laminated cohesive interwound fabric composed of yarn elements is constructed, a chamber for fluid coating material through Which said mandrel passes, an annular expanding device upon said mandrel within said chamber, said mandrel being provided With grooves in its outer surface passing underneath said annular expandlng member and on both sides thereof, said mandrel being provided with passages communicating with said grooves, a valve controlling the said passages, and means for introducing fluid coating material under pressure to said chamber and to said valve.

6. In a device for the purpose set forth, a

ing on both sides of said expanding means,

chamber for fluid coating material through which said mandrel passes, an annular expanding member in said chamber and upon said mandrel over which said fabric passes, said mandrel provided with an opening to admit coating material underneath said expanded fabric, and a valve in said opening.

8. In combination, a mandrel upon whicha I laminated cohesive-interwound fabric composed of yarn elements is constructed said mandrel, provided with a portion 0 large diameter, a portion of smaller diameter, a chamber for fluid. coating material through which said mandrel passes, an annular expanding device upon said mandrel within said chamber, saidmandrel provided with grooves passing between said annular expanding device and said mandrel, and

said mandrel provided with passages communicating'with said grooves, a valve controlling the said passages, and means for introducing fluid coating material under pressure to said chamber and to said valve.

9. In a device for constructing a laminated cohesive interwound fabric upon. a mandrel and for coating the same, in combination with said mandrel, said mandrel having portions of large andsmall diameter,

a ring having a narrow edge and sleeved over the larger portion -of said mandrel,

guiding and tension devices" 0 crating to interwind and laminate said fa ric on the larger portion of said mandrel, means for pulling the fabric oversaid mandrel, and over said ring to temporarily expand the same, and finally over the smaller extremity of said mandrel, and meansfor supplying coating material to the fabric while ex'- panded upon saidring.

10. In a' device for constructing-a laminated cohesive interwound fabric upon a 'mandrel, in combination a mandrel, said mandrel provided with a tapered extremity and with an o ening passin therethrough and with radia openings,'a said openings communicating with a central opening, and a common valve controlling all saidopens. 11. In a device for the purpose set forth, a mandrel having ortions of two diameters, a chamber for uid coating material, an expanding means upon said mandrel located within said chambensaid mandrel provided witha central passage, and with longitudinal grooves extending on both sides of said ring, and with radial openings connecting said central passage and said grooves and valve controlling said radial openings.

12. In a device for coating flexible bands, interwound upon a mandrel to form a laminated cohering fabric, the combination with the mandrel, of a chamber for coating material, and means for temporarily expanding the said fabric to separate said bands when passing through said chamber, whereextremity, expanding means upon said mandrel encircling the cylindrical portion thereof and located within said chamber, said mandrel being provided with a central passage, and with longitudinal grooves extending on both sides of said expanding means,

and with radial openings connecting said central passage and said grooves- 14. Inaa device of the classdescribed, a

chambervfor fluid coating material, a mandrel passing into said chamber, and expanding means upon said mandrel encircling the portion thereof within said chamber, said mandrel being provided with an internal passage and with longitudinal grooves extending on both sides of said expanding means, and with openings connecting said central passage-and said groves.

In testimony whereof, I hereuntoset my hand this fourteenth day of August 1914.

' LAWRENCE AQS'UBERS.

In presence of- Ennns'r MosMA v, A. T. OsBoRN.

by each band will be separately exposed to said coating material. 

